277 lines
7.4 KiB
PHP
277 lines
7.4 KiB
PHP
<?php
|
|
/*
|
|
$Id$
|
|
|
|
This code is part of LDAP Account Manager (http://www.ldap-account-manager.org/)
|
|
Copyright (C) 2003 - 2012 Roland Gruber
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
*/
|
|
|
|
/**
|
|
* ldap.inc provides basic functions to connect to the OpenLDAP server.
|
|
*
|
|
* @package LDAP
|
|
* @author Roland Gruber
|
|
*/
|
|
|
|
/** Access to configuration data */
|
|
include_once("config.inc");
|
|
|
|
/**
|
|
* Converts a HEX string to a binary value
|
|
*
|
|
* @param string $value HEX string
|
|
* @return binary result binary
|
|
*/
|
|
function convertHex2bin($value) {
|
|
return pack("H*", $value);
|
|
}
|
|
|
|
|
|
/**
|
|
* Ldap manages connection to LDAP and includes several helper functions.
|
|
*
|
|
* @package LDAP
|
|
*/
|
|
class Ldap{
|
|
|
|
/** Object of Config to access preferences */
|
|
private $conf;
|
|
|
|
/** Server handle */
|
|
private $server;
|
|
|
|
private $is_connected = false;
|
|
|
|
/** LDAP username used for bind */
|
|
private $username;
|
|
/** LDAP password used for bind */
|
|
private $password;
|
|
|
|
/** Random number (changes on every page request) */
|
|
private $rand;
|
|
|
|
/**
|
|
* @param object $config an object of class Config
|
|
*/
|
|
function __construct($config) {
|
|
setlanguage();
|
|
if (is_object($config)) $this->conf = $config;
|
|
else return false;
|
|
mt_srand((double)microtime()*1000000);
|
|
$this->rand = mt_rand();
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Connects to the server using the given username and password
|
|
*
|
|
* @param string $user user name
|
|
* @param string $passwd password
|
|
* @param boolean $allowAnonymous specifies if anonymous binds are allowed
|
|
* @return mixed if connect succeeds the server handle is returned, else false
|
|
*/
|
|
function connect($user, $passwd, $allowAnonymous=false) {
|
|
// close any prior connection
|
|
@$this->close();
|
|
// do not allow anonymous bind
|
|
if (!$allowAnonymous && ((!$user)||($user == "")||(!$passwd))) {
|
|
return false;
|
|
}
|
|
// save password und username encrypted
|
|
$this->encrypt_login($user, $passwd);
|
|
$this->server = @ldap_connect($this->conf->get_ServerURL());
|
|
if ($this->server) {
|
|
// use LDAPv3
|
|
ldap_set_option($this->server, LDAP_OPT_PROTOCOL_VERSION, 3);
|
|
// start TLS if specified
|
|
$useTLS = $this->conf->getUseTLS();
|
|
if (isset($useTLS) && ($useTLS == "yes")) {
|
|
@ldap_start_tls($this->server);
|
|
if (ldap_errno($this->server) != 0) {
|
|
logNewMessage(LOG_ERR, 'Unable to start TLS encryption. Please check if your server certificate is valid and if the LDAP server supports TLS at all.');
|
|
return ldap_errno($this->server);
|
|
}
|
|
}
|
|
$bind = @ldap_bind($this->server, $user, $passwd);
|
|
if ($bind) {
|
|
$return = ldap_errno($this->server);
|
|
$this->is_connected = true;
|
|
// return success number
|
|
return $return;
|
|
}
|
|
// return error number
|
|
else return ldap_errno($this->server);
|
|
}
|
|
else return false;
|
|
}
|
|
|
|
/** Closes connection to server */
|
|
function close() {
|
|
@ldap_close($this->server);
|
|
}
|
|
|
|
/**
|
|
* Returns the LDAP connection handle
|
|
*
|
|
* @return object connection handle
|
|
*/
|
|
function server() {
|
|
if (!$this->is_connected) {
|
|
$data = $this->decrypt_login();
|
|
$this->connect($data[0], $data[1]);
|
|
$this->is_connected = true;
|
|
}
|
|
return $this->server;
|
|
}
|
|
|
|
/** Closes connection to LDAP server before serialization */
|
|
function __sleep() {
|
|
$this->close();
|
|
// define which attributes to save
|
|
return array("conf", "username", "password", "rand");
|
|
}
|
|
|
|
/** Reconnects to LDAP server when deserialized */
|
|
function __wakeup() {
|
|
$this->is_connected = false;
|
|
// change random number
|
|
mt_srand($this->rand + (microtime() * 1000000));
|
|
$this->rand = mt_rand();
|
|
// delete PDF files and images which are older than 10 min
|
|
$tmpDir = dirname(__FILE__) . '/../tmp/';
|
|
$time = time();
|
|
$dir = @opendir($tmpDir);
|
|
$file = @readdir($dir);
|
|
while ($file) {
|
|
if ((substr($file, -4) == '.pdf') || (substr($file, -4) == '.jpg')) {
|
|
$path = $tmpDir . $file;
|
|
if ($time - filemtime($path) > 600) {
|
|
@unlink($path);
|
|
}
|
|
}
|
|
$file = @readdir($dir);
|
|
}
|
|
@closedir($dir);
|
|
}
|
|
|
|
/**
|
|
* Calculates a new value for rand
|
|
*
|
|
* @return int New random value
|
|
*/
|
|
function new_rand() {
|
|
// change random number
|
|
mt_srand($this->rand + (microtime() * 1000000));
|
|
$r = mt_rand();
|
|
$this->rand = $r;
|
|
return $r;
|
|
}
|
|
|
|
/**
|
|
* Encrypts a string
|
|
*
|
|
* @param string $data string to encrypt
|
|
* @param string $prefix prefix for cookie names
|
|
* @return object encrypted string
|
|
*/
|
|
public static function encrypt($data, $prefix='') {
|
|
// use MCrypt if available
|
|
if (function_exists('mcrypt_create_iv')) {
|
|
// MCrypt may have been enabled in a running session
|
|
if (!isset($_COOKIE[$prefix . "IV"]) || ($_COOKIE[$prefix . "IV"] == '')) return $data;
|
|
if ($_COOKIE[$prefix . "IV"] == "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx") {
|
|
return $data;
|
|
}
|
|
// read key and iv from cookie
|
|
$iv = base64_decode($_COOKIE[$prefix . "IV"]);
|
|
$key = base64_decode($_COOKIE[$prefix . "Key"]);
|
|
// encrypt string
|
|
return mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, base64_encode($data), MCRYPT_MODE_ECB, $iv);
|
|
}
|
|
// otherwise do not encrypt
|
|
else {
|
|
return $data;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Decrypts a string
|
|
*
|
|
* @param object $data string to decrypt
|
|
* @param string $prefix prefix for cookie names
|
|
* @return string decrypted string
|
|
*/
|
|
public static function decrypt($data, $prefix='') {
|
|
// use MCrypt if available
|
|
if (function_exists('mcrypt_create_iv')) {
|
|
// MCrypt may have been enabled in a running session
|
|
if (!isset($_COOKIE[$prefix . "IV"]) || ($_COOKIE[$prefix . "IV"] == '')) return $data;
|
|
if ($_COOKIE[$prefix . "IV"] == "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx") {
|
|
return $data;
|
|
}
|
|
// read key and iv from cookie
|
|
$iv = base64_decode($_COOKIE[$prefix . "IV"]);
|
|
$key = base64_decode($_COOKIE[$prefix . "Key"]);
|
|
// decrypt string
|
|
$ret = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $data, MCRYPT_MODE_ECB, $iv);
|
|
$ret = base64_decode(str_replace(chr(00), "", $ret));
|
|
return $ret;
|
|
}
|
|
// otherwise do not decrypt
|
|
else {
|
|
return $data;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Encrypts username and password
|
|
*
|
|
* @param string $username LDAP user name
|
|
* @param string $password LDAP password
|
|
*/
|
|
function encrypt_login($username, $password) {
|
|
// encrypt username and password
|
|
$this->username = base64_encode($this->encrypt($username));
|
|
$this->password = base64_encode($this->encrypt($password));
|
|
}
|
|
|
|
/**
|
|
* Decrypts username and password
|
|
*
|
|
* @return array array(user name, password)
|
|
*/
|
|
function decrypt_login() {
|
|
// decrypt username and password
|
|
$username = $this->decrypt(base64_decode($this->username));
|
|
$password = $this->decrypt(base64_decode($this->password));
|
|
$ret = array($username, $password);
|
|
return $ret;
|
|
}
|
|
|
|
/** Closes connection to LDAP server and deletes encrypted username/password */
|
|
function destroy() {
|
|
$this->close();
|
|
$this->username="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
|
|
$this->password="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
|
|
}
|
|
|
|
|
|
}
|
|
|
|
?>
|